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page last modified: Thu Oct 7 06:33:00 2021 PT

Meeting Presentations, Media and References

This page will be updated with any available presentations and/or links to materials presented at our meetings when provided. Currently, all links provided by Brian KA2MPG unless otherwise noted.

Note: Most of these links will take you off of the NPARC website.

2016 - January 10, 2017

• Basics of Varactor Diodes
• Basics of PIN diodes
• T_R Switch w PIN Diodes
• PIN Diode 3rd order IMD
• Basics of Reverse Recovery Time in a Diode

May 22, 2017

• Which Capacitor Do I Use
• Basics of the Gilbert Cell
• DSB-SC Modulation with the Gilbert Cell

July 10, 2017- Self-Resonance in Capacitors and Inductors

• Basics of Capacitor & Inductor self-resonance
• Capacitor self-resonance measured with an oscilloscope and signal generator

October 9, 2017

• Krystallos
• Quartz crystal motional parameters, and how to measure them
• #151: How to wind a toroid inductor | A quick tutorial
• #166: How to wind a trifilar toroid transformer for a diode ring mixer

December 11, 2017 - Bell Labs and the Early Days of Space Communications

• The Big Bounce
• Telstar

January 22, 2018 - Introduction to Electromagnetic Compatibility (EMC) Testing

• 1-Introduction to EMC Testing
• 2-Radiated Emissions Test
• 3-Conducted Emissions Tests
• 4-Radiated and Conducted Immunity Tests
• If you want to learn more about EMC testing

March 12, 2018

• Radio Hams (1939)
• Radio at War (1943)

March 26, 2018 - Tower Climbers

• 1500' TV Tower
• An Exclusive Club
• Bulb changing on a 1768 ft tower
• Above the Sky

April 23, 2018 - LCD display tutorial

• EEVblog #1044 - LCD Technology Tutorial
• EEVblog #1045 - How To Drive an LCD

May 14, 2018 - Claude Shannon

• Claude Shannon - Father of the Information Age
• What is the Shannon capacity theorem?

June 11, 2018 - Vacuum Tube RF Power Amplifiers

• Vacuum Tube Power Amplifiers Part 1
• Vacuum Tube Power Amplifiers Part 2
• Vacuum Tube Power Amplifiers Part 3
• Vacuum Tube Power Amplifiers Part 4
• Vacuum Tube Power Amplifiers Part 5
• Vacuum Tube Power Amplifiers Part 6
• Vacuum Tubes (Valves): Triode & Multipurpose Tubes - Not shown at meeting
• Vacuum Tube Amplifier Theory - Not shown at meeting

September 10, 2018 - SWR Measurement Concepts

• #196: How a Directional Coupler in an SWR meter works
• #208: Visualizing RF Standing Waves on Transmission Lines

November 12, 2018 - Amateur Microwave Operations

• 10 GHz An Introduction to X-Band for Amateur Radio
• Ham Nation - 10GHz Antenna Test
• Ham Radio 10GHZ Contacts - ARRL 10 GHZ Contest

December 10, 2018

Elecraft Founder Interviews

• Elecraft and QRZ - Ham Nation 379

241 GHz Experiments

• 241 GHz Amateur Radio Receiver Testing by John G8ACE
• 241 GHz Tour of the units.mp4
• 241 GHz Down the street test.mp4
• 241 GHz QTH to Long Walk 3.8Km.mp4
• 241GHz Home QTH to Shroner Wood
• 122 GHz-241 GHz New UK Records May 2017 G8ACE G8KQW

January 28, 2019 - Fractal Antennas

• What Is A Fractal (and what are they good for)?
• Fractal Antennas with Chip Cohen W1YW

February 25, 2019 - Quantum Computers

• We’re Close to a Universal Quantum Computer, Here’s Where We're At
• Quantum computing explained with a deck of cards | Dario Gil, IBM Research

March 11, 2019 - Analog Meters

• #235: Basics of Analog Panel Meters | Analog meter
• #236: Using a Current Shunt with a Panel Meter / Ammeter scale change

March 25, 2019 - Electromagnetic Waves Demonstration (Sir Lawrence Bragg)

• Electromagnetic Waves - with Sir Lawrence Bragg
• The humble Braggs and X-ray crystallography Solving the patterns of matter

April 8, 2019 - Near Field RF Probes & 4 Wire Resistance Measurement

• #234 Basics of Near Field RF Probes E-Field & H-Field How-to
• #237 4 Wire Resistance Measurement Kelvin connection

April 22, 2019 - Bell Labs Lasers History

• AT&T Archives Lasers Unlimited (Bonus Edition)
• AT&T Archives: Inventing the Laser at Bell Labs

June 10, 2019 - SpaceX Starlink Satellite Network

• How is Spacex Starlink going to be revolutionary?
• Starlink revisions, Nov 2018
• Delay is Not an Option: Low Latency Routing in Space

July 8, 2019 - Earth's Geomagnetic Field

• What's Wrong with Earth's Magnetic Field?
• Why Did We Test Nukes in Space?

July 22, 2019

• #295 What is SINAD & Overview How to Use the Sinadder 3 for FM receiver alignment
• #296: SSB & AM RF Envelopes, Peak Envelope

August 12, 2019 - The Smith Chart

• #297: Basics of the Smith Chart - Intro, impedance, VSWR, transmission lines, matching
• #264 RF Fun Visualize antenna tuner operation on Smith Chart
• Smith Charts to download and print out
• Smith Charts to download and print out
• Some Smith Chart tutorials
• Some Smith Chart tutorials

August 26, 2019 - Ham Radio oscilloscope measurements

• #7: Monitor your Ham Radio transmitter with an oscilloscope
• #61 Basics of RF Samplers, Sampling-Tees, RF-taps, etc.
• #8 Two-tone test of SSB transmitter output
• #71: Proper PSK31 Audio Level setup with a scope, RF power meter, and ALC indicator.

September 23, 2019 - Oscilloscope Probe Lead Inductance, Complex Impedance Measurement

• #68 Oscilloscope Probe Ground lead length affects on signal
• #111 How to make a high performance oscilloscope probe socket
• #112 Use an Oscilloscope and Signal Generator help tune an HF Antenna, measure complex impedance

October 14, 2019 - Connectors

• #230 How to install a BNC connector on RG-58 coax DIY Repair
• #120: How to Install Anderson Powerpole connectors
• #124 How to install an RJ45 connector on a CAT5 Ethernet net

October 28, 2019 - Interplanetary Internet, Coax Measurements, High-Voltage Probes

• How will the internet work in Space - The Interplanetary Internet
• #162 How to measure coax velocity factor VF and impedance Z
• #142 Basics of High Voltage Probes and how to use them